Answer:
276.135 J
Explanation:
Given that:
mass of Fe = 30.0 g
initial temperature = 24.5°C
final temperature = 45.0°C
specific heat of Fe = 0.449 J/g°C
We can determine the thermal energy added by using the formula;
Q = mcΔT
Q = 30.0g × 0.449 J/g°C × (45.0 - 24.5)°C
Q = 276.135 J
He preformed the first ever successful open heart surgery
Answer: Place his feet parallel to the baseline prior to tossing the ball
Work equals force × displacement (distance between initial point and end point is displacement)
if u follow this it becomes
work = 50 × 2 which is equal to 100
comment if u have more questions
Answer:
Momentum, 
Explanation:
The wave function of a particle is given by :
![y=exp[i(kx-\omega t)]](https://tex.z-dn.net/?f=y%3Dexp%5Bi%28kx-%5Comega%20t%29%5D)
...............(1)
Where
x is the distance travelled
t is the time taken
k is the propagation constant
is the angular frequency
The relation between the momentum and wavelength is given by :
............(2)
From equation (1),
Use above equation in equation (2) as :
Since, 
So, the x-component of the momentum of the particle is 
. Hence, this is the required solution.
